Time-controlled vulcanizer.



No. 739,578. PATBNTED SEPT. 22, 1903.

' W. H. BEGROFT.

I TIME CONTROLLED VULUANIZER.

' APPLIOATION FILED AUG. 21, 1902.

NO MODEL.

I C 7 G -Illlll I ll! M a Muses UNITED STATES I Patented September 22,1903.

WILLIAM H. BEOROFT, OF PHILADELPHIA, PENNSYLVANIA.

'TlME-CONTROLLED VULCANIZER.

SPECIFICATION forming part of Letters Patent No. 739,578, datedSeptember 22, 1903.

Application filed August 21, 1902. Serial No. 120,490. (No rn'odel.)

To all whom it may concern:

Be it known that I, WILLIAM HENRY Ba.

with vulcanizers to relieve the steam-pres sure thereof at a certainpredetermined time, and thus prevent the material under treat- 'mentfrom being overheated and therebyrenw dered useless.

The invention further consists in the de-.

tails of construction hereinafter described and claimed.

'Figure 1 represents a front elevation of a time-regulating apparatusconstructed in accordance with my invention and connected with avulcanizer. Fig. 2 represents a side elevation thereof. Fig. 3represents a fragmentary detail view of a portion of the springmotor.modified construction of the spring-motor.

Similar letters of reference indicate corresponding parts in thefigures.

Referring to the drawings, A designates a' portion of a vulcanizer offamiliar construction, and B the gas-supply pipe communicat ingtherewith, and as these parts are of ordinaryconstructi'on furtherdescription therefore is unnecessary. The vulcanizer A is also providedwith the steam blow-0d valve G, of ordinary construction, with the stemD of which is connected the arm E, the movement of the latter serving tooperate the valve.

In the art of vulcanizing various materials, whether'for commercial ordental purposes, it is desirable to cut off the supply of gas to thevulcanizer at a certain predetermined time, and to accomplish thisIemploy a clock or timing device F, so arranged as to actuate meanscontrolling the self-actuating valve G in the pipe B, supplying gas tothe vulcanizer, mechanism being also arranged so that upon the closingof the valve G the steam blow-0d valve 0 is opened to allow the escapeFig. 4: represents a front view of a;

of the steam. On the stem of the valve Gis a spring, the tendency ofwhich is to close the valve, and I term this a self-actuating valve. 7An arm or member J is also secured to the stem K of said valve and isprovided at its outer end with a yoke L, that engages a cam M, turned bythe clock, the tendency of the spring H being to hold one limb oftheyoke in engagement with the cam M. The operation of this part of myinvention is as follows: To operate the vulcanizer, the arm or member Jis moved downwardly to the position shown in Figs. 1 and 2, with theyoke engaging the cam M. In moving the arm to this position the valve Gis opened, and the position of the yoke relative to the ends of the wormor screw determines the period of time within which the gas-supply willbe cut off, it being understood, of course, that as the clock moves theyoke will travel across the onterend of the cam M, and when it reachesthe outer end the spring H will throw it to the position shown in dottedlines in Figs. 1 and 2, turning the stem K of the valve to close thelatter. When the gas is out off, the steam blow-oil valve is opened, andI accomplish this by means of a motor, conveniently a spring-motor N,that is connected with the arm E of the blow-ofi valve by chain P. Themotor N is provided with an outer movable drum Q, with which end of thechain P is connected, as at R, and when the motor is wound the arm E canbe moved into position to close'the valve 0. Said drum Q is held againstturning by means of a catch S, mounted upon a stationary support T, saidcatch engaging a notch or shoulder U in said drum. The catch is alsoprovided with a projection V, that is situated in the path of the arm ormember J, and a spring notch U. The said notch S is provided with afinger X, that engages the drum in the rear to limit the outwardmovements thereof under the influence of the spring IV. Secured to theframe or stationary part T is a guard-arm Z, that extends over the faceof the drum Q to hold the chain P in position, and thus prevent the samefrom flying ed and becoming displaced. The spring-motor can be wound bypulling on the chain P, and when the notch U arrives opposite the catchS the spring will W serves tohold the catch S engaged with a move thenotch into engagement therewith to prevent the spring from unwinding.The arm E of the blow-0E valve 0 is then moved to the position shown inFigs. 1 and 2 to close the latter. When the arm or member J is releasedfrom the cam M, it moves to the position shown in dotted lines, Figs. 1and 2, and the projection V of the catch S being in the path thereofsaid catch is turned on its pivot and disengaged from the shoulder onnotch U of said drum. This allows the spring to unwind, and the drum inturning winds the chain P and opens the valve 0 by means of the arm E.

It is of course understood that the particular construction of mechanismfor releasing the self-actuating device or valve Gis not es sential, asI can employ other time-regulating devices, my invention comprising anytime-controlling means for releasing such valve, and, further, myinvention is not limited to the particular form of motor M for actuatingthe blow-off valve, as other motors or devices actuated by gravitationcan be employed for this purpose, and therefore except in claims for thespecific construction my invention is not limited to the particulardevices herein shown and described.

In Fig. 4 I show the motor N as provided with a toothed wheel A, thatengages a rack B, from which extends a rod 0, that connects withtheblow-off valve 0, as another form of connection between the motor'andsaid valve, a handle D being employed to wind the motor.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In an attachment to a vulcanizer of the character stated, means forsupplying heating material to the vulcanizer, and a blow-0E valve on thevulcanizer, in combination with a timing device and mechanism connectedwith said means and valve, whereby by simultaneous or substantiallysimultaneous action, the heating material may be out 01f and thepressure within the vulcanizer relieved.

2. In an apparatus of the kind specified, a vulcanizer having a blow-oilvalve, aself-actuating valve controlling the pipe supplying gas to saidvulcanizer, a timing device controlling the operation of saidself-actuatin g valve, and a motor connected with the blow-0E valve ofsaid vulcanizer and adapted to be set in operation by reason of themovement of said self-actuating valve.

3. In an apparatus of the kind specified, a vulcanizer having a blow-offvalve, a self-actuating valve controlling the pipe supplying gas to saidvulcanizer, an arm or member movable with said valve, a timing devicehaving a cam adapted to engage and release said arm or member, a motorconnected with the blowofi valve of said vulcanizer, and means forholding said motorinoperative situated in the path of said arm ormember.

4. In an apparatus of the kind specified, a vulcanizer having a blow-offvalve, a self-actuating valve controlling the pipe supplying gas to saidvulcanizer, an arm or member movable with said valve, a timing devicehaving a cam adapted to engage and release said arm or member, a motor,a catch for holding the same inoperative situated in the path of saidarm or member and adapted to be moved by thelatter to allow themotor tooperate, and a connection between said motor and the blowoff valve ofthe vulcanizer.

5. In an apparatus of the kind specified, a vulcanizer having a blow-offvalve, a self-actuating valve controlling the pipe supplying gas to saidvulcanizer, a timing device adapted to permit said valve to operate, amotor, a spring-actuated catch to hold said motor in operative, aprojection on said catch, an arm or membermovable wit-h said valveadapted to engage said projection, and a connection between said motorand the blow-01f valve of the vulcanizer.

WILLIAM H. BECROFT.

Witnesses:

JOHN A. WIEDERSHEIM, E. HAYWARD FAIRBANKS.

